“URL with WWW and URL without WWW” -Is there any difference between them?

Question

i have noticed one things , when some website are opened in any browser then in URL bar some are like

http://www.something.com

where some are l

Answer 1

It does not matter if you have www in the URL or not, as long as you use the same URL always. This must be happening probably because your server is set-up to redirect the http://www.shareprogrammingtips.com/ to http://shareprogrammingtips.com/.

This will make sure that all the pages will always come to http://shareprogrammingtips.com/ and also search engines would index your site as http://shareprogrammingtips.com/. If your site is accessible from both http://www.shareprogrammingtips.com/ and http://shareprogrammingtips.com/ then the search engines would index both versions of your site, but the page rank of your site will be divided between these 2 versions as for search engines both these sites are different sites.